Independent US Healthcare Provider Directory & Public Medical Database
Active NPI 1750167128 Individual Practitioner Male Practitioner

Dr. Yaniv Zager , MD

Colon & Rectal Surgery • Worcester, MA

✓ Accepts Medicare Assignment

Professional Overview & Biography Verified Profile Summary

Dr. Yaniv Zager, MD is a certified Colon & Rectal Surgery practicing in Worcester, MA. With approximately 10 years of clinical experience since completing medical education in 2016, Dr. Zager delivers high-quality medical care to the local community at 67 BELMONT ST.

Dr. Zager is affiliated with Umass Memorial Medical Group Inc and accepts Medicare assignment.

Practice Location & Contact Primary Location

Practice Address

67 Belmont St

Worcester, MA 016052657

Telephone 5083348195
Fax 5083348130
Associated Practice Facility / Clinic

Medicare Profile & Education

Medical School

Other

Graduation Year

2016

Medicare Assignment

✓ Accepts Assignment

Telehealth Flag

In-Person Only

Specialty Benchmarks & Practice Insights

Comparative analytics for Colon & Rectal Surgery in Worcester, MA

Established Specialist (10-20 Yrs)
Practitioner Clinical Experience
10 Yrs -7.1 yrs vs City Avg
City Avg: 17.1 Yrs
State Avg: 25.6 Yrs
Regional Practice Density
9 Specialists

Practicing in Worcester, MA (56 Statewide)

Telehealth Adoption Rate
44.4% Regional Adoption

In-Person Office Visits Only

Medicare Pricing Discount
67.4% Avg Savings

Under CMS Medicare Fee Schedule vs Standard Submitted Charges

Clinical Seniority & Experience Comparison

Dr. Zager (10 Years) 10 Yrs
Worcester Specialty Average (17.1 Years) 17.1 Yrs

Medical Specialties & State Licenses

CMS Verified: 2025-09-29
Colon & Rectal Surgery Primary Specialty

NUCC Taxonomy Code: 208C00000X

State License MA 1024390

A colon and rectal surgeon is trained to diagnose and treat various diseases of the intestinal tract, colon, rectum, anal canal and perianal area by medical and surgical means. This specialist also deals with other organs and tissues (such as the liver, urinary and female reproductive system) involved with primary intestinal disease.

Hospital & Practice Group Affiliations

Umass Memorial Medical Group Inc

67 Belmont St, Worcester, MA 016052657

Phone: 5083348996

Secondary Practice Locations

2501 N Orange Ave Ste 235

Orlando, FL 328044659

Phone: 3214682656

21 Eastern Ave

Worcester, MA 016053094

Phone: 5083348195

28 Newton St

Southborough, MA 017721215

Phone: 5083348195

Practice Associates & Co-Workers

Healthcare professionals and specialists practicing at this location or sharing practice phone/fax

15 Associated Practitioners
NPI 1023091196

Doctor of Medicine (M.D.)

Dr. Kaitlyn Oldewurtel , DO

Colon & Rectal Surgery

NPI 1043871163

Doctor of Osteopathic Medicine (D.O.)

Janet Mcdade , NP

Nurse Practitioner

NPI 1194791657

Nurse Practitioner

NPI 1265041032

Doctor of Medicine (M.D.)

Dr. Thomas Peponis , MD

Colon & Rectal Surgery

NPI 1306376538

Doctor of Medicine (M.D.)

Jennifer Guertin , PA-C

Physician Assistant

NPI 1346471521

Physician Assistant (Certified)

Career & Practice History Timeline

Chronological log of verified NPI updates, location relocations, credentials, and registry changes

9 Historical Events
🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) September 29, 2025

Colon & Rectal Surgery (License #1024390 in MA)

📍
Updated Practice Location August 11, 2025

Registered at 67 BELMONT ST, WORCESTER, MA 016052657 (Tel: 5083348195)

📍
Updated Business Mailing Address August 11, 2025

Registered at PO BOX 415348, BOSTON, MA 022415348

NPI Profile Active September 01, 2023

NPI status registered as active in NPPES database

📍
Updated Practice Location September 01, 2023

Registered at 2501 N ORANGE AVE STE 235, ORLANDO, FL 328044659 (Tel: 3214682656)

📍
Updated Business Mailing Address September 01, 2023

Registered at 413 NAVARRE WAY, ALTHAMONTE SPRINGS, FL 32714

👤
Provider Name / Credentials Updated September 01, 2023

Recorded as YANIV ZAGER, MD

🎓
Medical Taxonomy / Specialty Registered (Primary Specialty) September 01, 2023

Student in an Organized Health Care Education/Training Program

🟢
Initial NPI Registration & Enumeration September 01, 2023

First registered as active Individual Practitioner in NPPES Database.

Patient & Community Reviews

Verified patient ratings, medical care experiences, and facility photos

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NPI Administrative Meta

NPI Number: 1750167128
Entity Type:
Individual Provider Physician, Nurse Practitioner, or Solo Healthcare Professional (Type 1 NPI)
Enumeration Date: September 01, 2023
Last Update: September 29, 2025
Sole Proprietor: No

Mailing Address

Po Box 415348

Boston, MA 022415348

Public Domain Record This profile contains public domain information published by CMS and NPPES under the Freedom of Information Act (FOIA).
⚠️ Medical Disclaimer

This directory listing is for informational purposes only and does not constitute medical advice, diagnosis, or physician endorsement. If you are experiencing a medical emergency, please call 911 immediately.